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Finding the Fourth Proportional to 571.74, 859.23 and 557.16

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Solution

The fourth proportional to 571.74, 859.23 and 557.16 is: 837.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    571.74 : 859.23 = 557.16 : x
  2. Step 2: Convert to fraction form
    571.74/859.23 = 557.16/x
  3. Step 3: Cross multiply
    571.74x = 859.23 × 557.16
  4. Step 4: Simplify right side
    571.74x = 478,728.59
  5. Step 5: Solve for x
    x = 478,728.59/571.74
  6. Step 6: Final answer
    x = 837.32

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.